SAM4S16C Atmel Corporation, SAM4S16C Datasheet - Page 41

• Manufacturer Part Number: SAM4S16C
• Manufacturer: Atmel Corporation

Specifications of SAM4S16C

• Flash (kbytes): 1024 Kbytes
• Pin Count: 100
• # Of Touch Channels: 32
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 79
• Ext Interrupts: 79
• Usb Transceiver: 1
• Quadrature Decoder Channels: 2
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 3
• Twi (i2c): 2
• Uart: 4
• Ssc: 1
• Sd / Emmc: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 16
• Adc Resolution (bits): 12
• Adc Speed (ksps): 1000
• Analog Comparators: 1
• Resistive Touch Screen: No
• Dac Channels: 2
• Dac Resolution (bits): 12
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 128
• Self Program Memory: YES
• External Bus Interface: 1
• Dram Memory: No
• Nand Interface: Yes
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8/3.3
• Operating Voltage (vcc): 1.62 to 3.6
• Fpu: No
• Mpu / Mmu: Yes / No
• Timers: 6
• Output Compare Channels: 6
• Input Capture Channels: 6
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

10.7
10.8
10.9
11100AS–ATARM–27-Oct-11
Watchdog Timer
SysTick Timer
Real-Time Timer
Figure 10-3. Power Management Controller Block Diagram
The SysTick calibration value is fixed at 12500, which allows the generation of a time base of
1 ms with SysTick clock at 12.5 MHz (max HCLK/8 = 100 MHz/8 = 12500, so STCALIB =
0x30D4).
• 16-bit key-protected only-once Programmable Counter
• Windowed, prevents the processor to be in a deadlock on the watchdog access
• 24-bit down counter
• Self-reload capability
• Flexible System timer
• Real-Time Timer, allowing backup of time with different accuracies
– 32-bit Free-running backup Counter
– Integrates a 16-bit programmable prescaler running on slow clock
PLLACK
PLLBCK
MAINCK
SLCK
Master Clock Controller
MAINCK
PLLACK
PLLBCK
PLLBCK
SLCK
/1,/2,/4,...,/64
Prescaler
Programmable Clock Controller
USB Clock Controller
/1,/2,/4,...,/64
Prescaler
Sleep Mode
ON/OFF
Clock Controller
Processor
Controller
ON/OFF
Divider
Clock
Peripherals
ON/OFF
/8
MCK
HCK
int
SystTick
FCLK
periph_clk[..]
pck[..]
UDPCK
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